I have install my home made system a 7 plate dry cell + nnnnn - with 1/8" gaskets. I hace all the check valves and a bubbler. With the system off my engine vacuum make the bubbler churn and seems to be sucking some of the water into my engine is this normal? until I get my best mileage with gas I will not be using the HHO so I reversed my blow back valve for now.

No. That is not normal. Where are you putting your HHO? I hope you aren't putting it into the engine manifold. Just put it into the intake air stream between the air filter and the throttle body. There won't be too much vacuum there.

(06-12-2013 10:36 AM)Caitlyn Jose Wrote: I have been facing this air stream problem from few days, is it really normal or should i get my car to the garage? Please give me some suggestions.

Where exactly are you facing the steam problem in your engine? It depends completely where you have installed the system and improper installation also has a bad effect overall. Please share more details on your problem.